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Amazing documentary hosted by Stephen Hawking asking the key question so many people have wondered since the beginning of mankind, does a "god" or a "celestial dictator" exist?? Stephen Hawking disects the science of the universe in answering this very fundamental question. Follow-up lecture by Lawr...

Carl Sagan talks about "the gods." This clip is from Carl Sagan's Cosmos episode 10, "The Edge of Forever."

Alexander Tsiaras (Associate professor of medicine and chief of scientific visualization at Yale University in the department of medicine) shares a powerful medical visualization, showing human development from conception to birth and beyond.

The mind-blowing answer comes from a theory describing the birth of the universe in the first instant of time.

The universe has long captivated us with its immense scales of distance and time.

How far does it stretch? Where does it end... and what lies beyond its star fields... and streams of...

They are the biggest questions that science can possibly ask: where did everything in our universe come from? How did it all begin? For nearly a hundred years, we thought we had the answer: a big bang some 14 billion years ago.
But now some scientists believe that was not really the beginning. Our ...

They are the biggest questions that science can possibly ask: where did everything in our universe come from? How did it all begin? For nearly a hundred years, we thought we had the answer: a big bang some 14 billion years ago.
But now some scientists believe that was not really the beginning. Our ...

They are the biggest questions that science can possibly ask: where did everything in our universe come from? How did it all begin? For nearly a hundred years, we thought we had the answer: a big bang some 14 billion years ago.
But now some scientists believe that was not really the beginning. Our ...

The question of what caused the Big Bang is one of the most difficult facing humanity. We may never find an answer, and even if we do, we probably won't understand it. It's difficult to imagine an event occurring without a cause, and yet, that is precisely the prospect we are faced with when it come...

The universe was born 13.7 billion years ago with the Big Bang. But what was there before? Scientists are starting to get an answer thanks to the time-travel...

Part of a BBC documentary explaining how we could just be copies of a computer simulation

Objectivist philosopher and atheist Ayn Rand discusses the dangers of faith, the meaning of death and her disbelief in God.